28495820

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{59}}^1$

素因数の和:159

約数の個数: 96

約数和(自身を含む): 67737600

約数和(自身を除く): 39241780

約数列:

[1, 2, 4, 5, 10, 19, 20, 31, 38, 41, 59, 62, 76, 82, 95, 118, 124, 155, 164, 190, 205, 236, 295, 310, 380, 410, 589, 590, 620, 779, 820, 1121, 1178, 1180, 1271, 1558, 1829, 2242, 2356, 2419, 2542, 2945, 3116, 3658, 3895, 4484, 4838, 5084, 5605, 5890, 6355, 7316, 7790, 9145, 9676, 11210, 11780, 12095, 12710, 15580, 18290, 22420, 24149, 24190, 25420, 34751, 36580, 45961, 48298, 48380, 69502, 74989, 91922, 96596, 120745, 139004, 149978, 173755, 183844, 229805, 241490, 299956, 347510, 374945, 459610, 482980, 695020, 749890, 919220, 1424791, 1499780, 2849582, 5699164, 7123955, 14247910, 28495820]

約数ペア:

[(1, 28495820), (2, 14247910), (4, 7123955), (5, 5699164), (10, 2849582), (19, 1499780), (20, 1424791), (31, 919220), (38, 749890), (41, 695020), (59, 482980), (62, 459610), (76, 374945), (82, 347510), (95, 299956), (118, 241490), (124, 229805), (155, 183844), (164, 173755), (190, 149978), (205, 139004), (236, 120745), (295, 96596), (310, 91922), (380, 74989), (410, 69502), (589, 48380), (590, 48298), (620, 45961), (779, 36580), (820, 34751), (1121, 25420), (1178, 24190), (1180, 24149), (1271, 22420), (1558, 18290), (1829, 15580), (2242, 12710), (2356, 12095), (2419, 11780), (2542, 11210), (2945, 9676), (3116, 9145), (3658, 7790), (3895, 7316), (4484, 6355), (4838, 5890), (5084, 5605)]