78902440

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{197}}^1$

素因数の和:275

約数の個数: 128

約数和(自身を含む): 205286400

約数和(自身を除く): 126383960

約数列:

[1, 2, 4, 5, 8, 10, 17, 19, 20, 31, 34, 38, 40, 62, 68, 76, 85, 95, 124, 136, 152, 155, 170, 190, 197, 248, 310, 323, 340, 380, 394, 527, 589, 620, 646, 680, 760, 788, 985, 1054, 1178, 1240, 1292, 1576, 1615, 1970, 2108, 2356, 2584, 2635, 2945, 3230, 3349, 3743, 3940, 4216, 4712, 5270, 5890, 6107, 6460, 6698, 7486, 7880, 10013, 10540, 11780, 12214, 12920, 13396, 14972, 16745, 18715, 20026, 21080, 23560, 24428, 26792, 29944, 30535, 33490, 37430, 40052, 48856, 50065, 61070, 63631, 66980, 74860, 80104, 100130, 103819, 116033, 122140, 127262, 133960, 149720, 200260, 207638, 232066, 244280, 254524, 318155, 400520, 415276, 464132, 509048, 519095, 580165, 636310, 830552, 928264, 1038190, 1160330, 1272620, 1972561, 2076380, 2320660, 2545240, 3945122, 4152760, 4641320, 7890244, 9862805, 15780488, 19725610, 39451220, 78902440]

約数ペア:

[(1, 78902440), (2, 39451220), (4, 19725610), (5, 15780488), (8, 9862805), (10, 7890244), (17, 4641320), (19, 4152760), (20, 3945122), (31, 2545240), (34, 2320660), (38, 2076380), (40, 1972561), (62, 1272620), (68, 1160330), (76, 1038190), (85, 928264), (95, 830552), (124, 636310), (136, 580165), (152, 519095), (155, 509048), (170, 464132), (190, 415276), (197, 400520), (248, 318155), (310, 254524), (323, 244280), (340, 232066), (380, 207638), (394, 200260), (527, 149720), (589, 133960), (620, 127262), (646, 122140), (680, 116033), (760, 103819), (788, 100130), (985, 80104), (1054, 74860), (1178, 66980), (1240, 63631), (1292, 61070), (1576, 50065), (1615, 48856), (1970, 40052), (2108, 37430), (2356, 33490), (2584, 30535), (2635, 29944), (2945, 26792), (3230, 24428), (3349, 23560), (3743, 21080), (3940, 20026), (4216, 18715), (4712, 16745), (5270, 14972), (5890, 13396), (6107, 12920), (6460, 12214), (6698, 11780), (7486, 10540), (7880, 10013)]