20003010400

素因数分解:

$2^5\times 5^2\times {\mathrm{31}}^1\times {\mathrm{809}}^1\times {\mathrm{997}}^1$

素因数の和:1857

約数の個数: 144

約数和(自身を含む): 50520516480

約数和(自身を除く): 30517506080

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 31, 32, 40, 50, 62, 80, 100, 124, 155, 160, 200, 248, 310, 400, 496, 620, 775, 800, 809, 992, 997, 1240, 1550, 1618, 1994, 2480, 3100, 3236, 3988, 4045, 4960, 4985, 6200, 6472, 7976, 8090, 9970, 12400, 12944, 15952, 16180, 19940, 20225, 24800, 24925, 25079, 25888, 30907, 31904, 32360, 39880, 40450, 49850, 50158, 61814, 64720, 79760, 80900, 99700, 100316, 123628, 125395, 129440, 154535, 159520, 161800, 199400, 200632, 247256, 250790, 309070, 323600, 398800, 401264, 494512, 501580, 618140, 626975, 647200, 772675, 797600, 802528, 806573, 989024, 1003160, 1236280, 1253950, 1545350, 1613146, 2006320, 2472560, 2507900, 3090700, 3226292, 4012640, 4032865, 4945120, 5015800, 6181400, 6452584, 8065730, 10031600, 12362800, 12905168, 16131460, 20063200, 20164325, 24725600, 25003763, 25810336, 32262920, 40328650, 50007526, 64525840, 80657300, 100015052, 125018815, 129051680, 161314600, 200030104, 250037630, 322629200, 400060208, 500075260, 625094075, 645258400, 800120416, 1000150520, 1250188150, 2000301040, 2500376300, 4000602080, 5000752600, 10001505200, 20003010400]

約数ペア:

[(1, 20003010400), (2, 10001505200), (4, 5000752600), (5, 4000602080), (8, 2500376300), (10, 2000301040), (16, 1250188150), (20, 1000150520), (25, 800120416), (31, 645258400), (32, 625094075), (40, 500075260), (50, 400060208), (62, 322629200), (80, 250037630), (100, 200030104), (124, 161314600), (155, 129051680), (160, 125018815), (200, 100015052), (248, 80657300), (310, 64525840), (400, 50007526), (496, 40328650), (620, 32262920), (775, 25810336), (800, 25003763), (809, 24725600), (992, 20164325), (997, 20063200), (1240, 16131460), (1550, 12905168), (1618, 12362800), (1994, 10031600), (2480, 8065730), (3100, 6452584), (3236, 6181400), (3988, 5015800), (4045, 4945120), (4960, 4032865), (4985, 4012640), (6200, 3226292), (6472, 3090700), (7976, 2507900), (8090, 2472560), (9970, 2006320), (12400, 1613146), (12944, 1545350), (15952, 1253950), (16180, 1236280), (19940, 1003160), (20225, 989024), (24800, 806573), (24925, 802528), (25079, 797600), (25888, 772675), (30907, 647200), (31904, 626975), (32360, 618140), (39880, 501580), (40450, 494512), (49850, 401264), (50158, 398800), (61814, 323600), (64720, 309070), (79760, 250790), (80900, 247256), (99700, 200632), (100316, 199400), (123628, 161800), (125395, 159520), (129440, 154535)]