245219920

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:245

約数の個数: 160

約数和(自身を含む): 655672320

約数和(自身を除く): 410452400

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 31, 40, 44, 55, 62, 80, 88, 89, 101, 110, 124, 155, 176, 178, 202, 220, 248, 310, 341, 356, 404, 440, 445, 496, 505, 620, 682, 712, 808, 880, 890, 979, 1010, 1111, 1240, 1364, 1424, 1616, 1705, 1780, 1958, 2020, 2222, 2480, 2728, 2759, 3131, 3410, 3560, 3916, 4040, 4444, 4895, 5456, 5518, 5555, 6262, 6820, 7120, 7832, 8080, 8888, 8989, 9790, 11036, 11110, 12524, 13640, 13795, 15655, 15664, 17776, 17978, 19580, 22072, 22220, 25048, 27280, 27590, 30349, 31310, 34441, 35956, 39160, 44144, 44440, 44945, 50096, 55180, 60698, 62620, 68882, 71912, 78320, 88880, 89890, 98879, 110360, 121396, 125240, 137764, 143824, 151745, 172205, 179780, 197758, 220720, 242792, 250480, 275528, 278659, 303490, 344410, 359560, 395516, 485584, 494395, 551056, 557318, 606980, 688820, 719120, 791032, 988790, 1114636, 1213960, 1377640, 1393295, 1582064, 1977580, 2229272, 2427920, 2755280, 2786590, 3065249, 3955160, 4458544, 5573180, 6130498, 7910320, 11146360, 12260996, 15326245, 22292720, 24521992, 30652490, 49043984, 61304980, 122609960, 245219920]

約数ペア:

[(1, 245219920), (2, 122609960), (4, 61304980), (5, 49043984), (8, 30652490), (10, 24521992), (11, 22292720), (16, 15326245), (20, 12260996), (22, 11146360), (31, 7910320), (40, 6130498), (44, 5573180), (55, 4458544), (62, 3955160), (80, 3065249), (88, 2786590), (89, 2755280), (101, 2427920), (110, 2229272), (124, 1977580), (155, 1582064), (176, 1393295), (178, 1377640), (202, 1213960), (220, 1114636), (248, 988790), (310, 791032), (341, 719120), (356, 688820), (404, 606980), (440, 557318), (445, 551056), (496, 494395), (505, 485584), (620, 395516), (682, 359560), (712, 344410), (808, 303490), (880, 278659), (890, 275528), (979, 250480), (1010, 242792), (1111, 220720), (1240, 197758), (1364, 179780), (1424, 172205), (1616, 151745), (1705, 143824), (1780, 137764), (1958, 125240), (2020, 121396), (2222, 110360), (2480, 98879), (2728, 89890), (2759, 88880), (3131, 78320), (3410, 71912), (3560, 68882), (3916, 62620), (4040, 60698), (4444, 55180), (4895, 50096), (5456, 44945), (5518, 44440), (5555, 44144), (6262, 39160), (6820, 35956), (7120, 34441), (7832, 31310), (8080, 30349), (8888, 27590), (8989, 27280), (9790, 25048), (11036, 22220), (11110, 22072), (12524, 19580), (13640, 17978), (13795, 17776), (15655, 15664)]