28528060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1$

素因数の和:187

約数の個数: 96

約数和(自身を含む): 69672960

約数和(自身を除く): 41144900

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 31, 44, 47, 55, 62, 89, 94, 110, 124, 155, 178, 188, 220, 235, 310, 341, 356, 445, 470, 517, 620, 682, 890, 940, 979, 1034, 1364, 1457, 1705, 1780, 1958, 2068, 2585, 2759, 2914, 3410, 3916, 4183, 4895, 5170, 5518, 5828, 6820, 7285, 8366, 9790, 10340, 11036, 13795, 14570, 16027, 16732, 19580, 20915, 27590, 29140, 30349, 32054, 41830, 46013, 55180, 60698, 64108, 80135, 83660, 92026, 121396, 129673, 151745, 160270, 184052, 230065, 259346, 303490, 320540, 460130, 518692, 606980, 648365, 920260, 1296730, 1426403, 2593460, 2852806, 5705612, 7132015, 14264030, 28528060]

約数ペア:

[(1, 28528060), (2, 14264030), (4, 7132015), (5, 5705612), (10, 2852806), (11, 2593460), (20, 1426403), (22, 1296730), (31, 920260), (44, 648365), (47, 606980), (55, 518692), (62, 460130), (89, 320540), (94, 303490), (110, 259346), (124, 230065), (155, 184052), (178, 160270), (188, 151745), (220, 129673), (235, 121396), (310, 92026), (341, 83660), (356, 80135), (445, 64108), (470, 60698), (517, 55180), (620, 46013), (682, 41830), (890, 32054), (940, 30349), (979, 29140), (1034, 27590), (1364, 20915), (1457, 19580), (1705, 16732), (1780, 16027), (1958, 14570), (2068, 13795), (2585, 11036), (2759, 10340), (2914, 9790), (3410, 8366), (3916, 7285), (4183, 6820), (4895, 5828), (5170, 5518)]