20029100

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:136

約数の個数: 144

約数和(自身を含む): 55996416

約数和(自身を除く): 35967316

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 31, 35, 50, 52, 62, 65, 70, 71, 91, 100, 124, 130, 140, 142, 155, 175, 182, 217, 260, 284, 310, 325, 350, 355, 364, 403, 434, 455, 497, 620, 650, 700, 710, 775, 806, 868, 910, 923, 994, 1085, 1300, 1420, 1550, 1612, 1775, 1820, 1846, 1988, 2015, 2170, 2201, 2275, 2485, 2821, 3100, 3550, 3692, 4030, 4340, 4402, 4550, 4615, 4970, 5425, 5642, 6461, 7100, 8060, 8804, 9100, 9230, 9940, 10075, 10850, 11005, 11284, 12425, 12922, 14105, 15407, 18460, 20150, 21700, 22010, 23075, 24850, 25844, 28210, 28613, 30814, 32305, 40300, 44020, 46150, 49700, 55025, 56420, 57226, 61628, 64610, 70525, 77035, 92300, 110050, 114452, 129220, 141050, 143065, 154070, 161525, 200291, 220100, 282100, 286130, 308140, 323050, 385175, 400582, 572260, 646100, 715325, 770350, 801164, 1001455, 1430650, 1540700, 2002910, 2861300, 4005820, 5007275, 10014550, 20029100]

約数ペア:

[(1, 20029100), (2, 10014550), (4, 5007275), (5, 4005820), (7, 2861300), (10, 2002910), (13, 1540700), (14, 1430650), (20, 1001455), (25, 801164), (26, 770350), (28, 715325), (31, 646100), (35, 572260), (50, 400582), (52, 385175), (62, 323050), (65, 308140), (70, 286130), (71, 282100), (91, 220100), (100, 200291), (124, 161525), (130, 154070), (140, 143065), (142, 141050), (155, 129220), (175, 114452), (182, 110050), (217, 92300), (260, 77035), (284, 70525), (310, 64610), (325, 61628), (350, 57226), (355, 56420), (364, 55025), (403, 49700), (434, 46150), (455, 44020), (497, 40300), (620, 32305), (650, 30814), (700, 28613), (710, 28210), (775, 25844), (806, 24850), (868, 23075), (910, 22010), (923, 21700), (994, 20150), (1085, 18460), (1300, 15407), (1420, 14105), (1550, 12922), (1612, 12425), (1775, 11284), (1820, 11005), (1846, 10850), (1988, 10075), (2015, 9940), (2170, 9230), (2201, 9100), (2275, 8804), (2485, 8060), (2821, 7100), (3100, 6461), (3550, 5642), (3692, 5425), (4030, 4970), (4340, 4615), (4402, 4550)]