78994020

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{521}}^1$

素因数の和:578

約数の個数: 144

約数和(自身を含む): 267297408

約数和(自身を除く): 188303388

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 19, 20, 21, 28, 30, 35, 38, 42, 57, 60, 70, 76, 84, 95, 105, 114, 133, 140, 190, 210, 228, 266, 285, 361, 380, 399, 420, 521, 532, 570, 665, 722, 798, 1042, 1083, 1140, 1330, 1444, 1563, 1596, 1805, 1995, 2084, 2166, 2527, 2605, 2660, 3126, 3610, 3647, 3990, 4332, 5054, 5210, 5415, 6252, 7220, 7294, 7581, 7815, 7980, 9899, 10108, 10420, 10830, 10941, 12635, 14588, 15162, 15630, 18235, 19798, 21660, 21882, 25270, 29697, 30324, 31260, 36470, 37905, 39596, 43764, 49495, 50540, 54705, 59394, 69293, 72940, 75810, 98990, 109410, 118788, 138586, 148485, 151620, 188081, 197980, 207879, 218820, 277172, 296970, 346465, 376162, 415758, 564243, 593940, 692930, 752324, 831516, 940405, 1039395, 1128486, 1316567, 1385860, 1880810, 2078790, 2256972, 2633134, 2821215, 3761620, 3949701, 4157580, 5266268, 5642430, 6582835, 7899402, 11284860, 13165670, 15798804, 19748505, 26331340, 39497010, 78994020]

約数ペア:

[(1, 78994020), (2, 39497010), (3, 26331340), (4, 19748505), (5, 15798804), (6, 13165670), (7, 11284860), (10, 7899402), (12, 6582835), (14, 5642430), (15, 5266268), (19, 4157580), (20, 3949701), (21, 3761620), (28, 2821215), (30, 2633134), (35, 2256972), (38, 2078790), (42, 1880810), (57, 1385860), (60, 1316567), (70, 1128486), (76, 1039395), (84, 940405), (95, 831516), (105, 752324), (114, 692930), (133, 593940), (140, 564243), (190, 415758), (210, 376162), (228, 346465), (266, 296970), (285, 277172), (361, 218820), (380, 207879), (399, 197980), (420, 188081), (521, 151620), (532, 148485), (570, 138586), (665, 118788), (722, 109410), (798, 98990), (1042, 75810), (1083, 72940), (1140, 69293), (1330, 59394), (1444, 54705), (1563, 50540), (1596, 49495), (1805, 43764), (1995, 39596), (2084, 37905), (2166, 36470), (2527, 31260), (2605, 30324), (2660, 29697), (3126, 25270), (3610, 21882), (3647, 21660), (3990, 19798), (4332, 18235), (5054, 15630), (5210, 15162), (5415, 14588), (6252, 12635), (7220, 10941), (7294, 10830), (7581, 10420), (7815, 10108), (7980, 9899)]