77977980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{17}}^2\times {\mathrm{1499}}^1$

素因数の和:1548

約数の個数: 108

約数和(自身を含む): 251433000

約数和(自身を除く): 173455020

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 17, 18, 20, 30, 34, 36, 45, 51, 60, 68, 85, 90, 102, 153, 170, 180, 204, 255, 289, 306, 340, 510, 578, 612, 765, 867, 1020, 1156, 1445, 1499, 1530, 1734, 2601, 2890, 2998, 3060, 3468, 4335, 4497, 5202, 5780, 5996, 7495, 8670, 8994, 10404, 13005, 13491, 14990, 17340, 17988, 22485, 25483, 26010, 26982, 29980, 44970, 50966, 52020, 53964, 67455, 76449, 89940, 101932, 127415, 134910, 152898, 229347, 254830, 269820, 305796, 382245, 433211, 458694, 509660, 764490, 866422, 917388, 1146735, 1299633, 1528980, 1732844, 2166055, 2293470, 2599266, 3898899, 4332110, 4586940, 5198532, 6498165, 7797798, 8664220, 12996330, 15595596, 19494495, 25992660, 38988990, 77977980]

約数ペア:

[(1, 77977980), (2, 38988990), (3, 25992660), (4, 19494495), (5, 15595596), (6, 12996330), (9, 8664220), (10, 7797798), (12, 6498165), (15, 5198532), (17, 4586940), (18, 4332110), (20, 3898899), (30, 2599266), (34, 2293470), (36, 2166055), (45, 1732844), (51, 1528980), (60, 1299633), (68, 1146735), (85, 917388), (90, 866422), (102, 764490), (153, 509660), (170, 458694), (180, 433211), (204, 382245), (255, 305796), (289, 269820), (306, 254830), (340, 229347), (510, 152898), (578, 134910), (612, 127415), (765, 101932), (867, 89940), (1020, 76449), (1156, 67455), (1445, 53964), (1499, 52020), (1530, 50966), (1734, 44970), (2601, 29980), (2890, 26982), (2998, 26010), (3060, 25483), (3468, 22485), (4335, 17988), (4497, 17340), (5202, 14990), (5780, 13491), (5996, 13005), (7495, 10404), (8670, 8994)]