82720300

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{197}}^1$

素因数の和:260

約数の個数: 144

約数和(自身を含む): 216548640

約数和(自身を除く): 133828340

約数列:

[1, 2, 4, 5, 10, 13, 17, 19, 20, 25, 26, 34, 38, 50, 52, 65, 68, 76, 85, 95, 100, 130, 170, 190, 197, 221, 247, 260, 323, 325, 340, 380, 394, 425, 442, 475, 494, 646, 650, 788, 850, 884, 950, 985, 988, 1105, 1235, 1292, 1300, 1615, 1700, 1900, 1970, 2210, 2470, 2561, 3230, 3349, 3743, 3940, 4199, 4420, 4925, 4940, 5122, 5525, 6175, 6460, 6698, 7486, 8075, 8398, 9850, 10244, 11050, 12350, 12805, 13396, 14972, 16150, 16745, 16796, 18715, 19700, 20995, 22100, 24700, 25610, 32300, 33490, 37430, 41990, 43537, 48659, 51220, 63631, 64025, 66980, 74860, 83725, 83980, 87074, 93575, 97318, 104975, 127262, 128050, 167450, 174148, 187150, 194636, 209950, 217685, 243295, 254524, 256100, 318155, 334900, 374300, 419900, 435370, 486590, 636310, 827203, 870740, 973180, 1088425, 1216475, 1272620, 1590775, 1654406, 2176850, 2432950, 3181550, 3308812, 4136015, 4353700, 4865900, 6363100, 8272030, 16544060, 20680075, 41360150, 82720300]

約数ペア:

[(1, 82720300), (2, 41360150), (4, 20680075), (5, 16544060), (10, 8272030), (13, 6363100), (17, 4865900), (19, 4353700), (20, 4136015), (25, 3308812), (26, 3181550), (34, 2432950), (38, 2176850), (50, 1654406), (52, 1590775), (65, 1272620), (68, 1216475), (76, 1088425), (85, 973180), (95, 870740), (100, 827203), (130, 636310), (170, 486590), (190, 435370), (197, 419900), (221, 374300), (247, 334900), (260, 318155), (323, 256100), (325, 254524), (340, 243295), (380, 217685), (394, 209950), (425, 194636), (442, 187150), (475, 174148), (494, 167450), (646, 128050), (650, 127262), (788, 104975), (850, 97318), (884, 93575), (950, 87074), (985, 83980), (988, 83725), (1105, 74860), (1235, 66980), (1292, 64025), (1300, 63631), (1615, 51220), (1700, 48659), (1900, 43537), (1970, 41990), (2210, 37430), (2470, 33490), (2561, 32300), (3230, 25610), (3349, 24700), (3743, 22100), (3940, 20995), (4199, 19700), (4420, 18715), (4925, 16796), (4940, 16745), (5122, 16150), (5525, 14972), (6175, 13396), (6460, 12805), (6698, 12350), (7486, 11050), (8075, 10244), (8398, 9850)]