20199487100

素因数分解:

$2^2\times 5^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{817793}}^1$

素因数の和:817839

約数の個数: 72

約数和(自身を含む): 49689163440

約数和(自身を除く): 29489676340

約数列:

[1, 2, 4, 5, 10, 13, 19, 20, 25, 26, 38, 50, 52, 65, 76, 95, 100, 130, 190, 247, 260, 325, 380, 475, 494, 650, 950, 988, 1235, 1300, 1900, 2470, 4940, 6175, 12350, 24700, 817793, 1635586, 3271172, 4088965, 8177930, 10631309, 15538067, 16355860, 20444825, 21262618, 31076134, 40889650, 42525236, 53156545, 62152268, 77690335, 81779300, 106313090, 155380670, 201994871, 212626180, 265782725, 310761340, 388451675, 403989742, 531565450, 776903350, 807979484, 1009974355, 1063130900, 1553806700, 2019948710, 4039897420, 5049871775, 10099743550, 20199487100]

約数ペア:

[(1, 20199487100), (2, 10099743550), (4, 5049871775), (5, 4039897420), (10, 2019948710), (13, 1553806700), (19, 1063130900), (20, 1009974355), (25, 807979484), (26, 776903350), (38, 531565450), (50, 403989742), (52, 388451675), (65, 310761340), (76, 265782725), (95, 212626180), (100, 201994871), (130, 155380670), (190, 106313090), (247, 81779300), (260, 77690335), (325, 62152268), (380, 53156545), (475, 42525236), (494, 40889650), (650, 31076134), (950, 21262618), (988, 20444825), (1235, 16355860), (1300, 15538067), (1900, 10631309), (2470, 8177930), (4940, 4088965), (6175, 3271172), (12350, 1635586), (24700, 817793)]