20289367040

素因数分解:

$2^{10}\times 5^1\times {\mathrm{479}}^1\times {\mathrm{8273}}^1$

素因数の和:8777

約数の個数: 88

約数和(自身を含む): 48778208640

約数和(自身を除く): 28488841600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 479, 512, 640, 958, 1024, 1280, 1916, 2395, 2560, 3832, 4790, 5120, 7664, 8273, 9580, 15328, 16546, 19160, 30656, 33092, 38320, 41365, 61312, 66184, 76640, 82730, 122624, 132368, 153280, 165460, 245248, 264736, 306560, 330920, 490496, 529472, 613120, 661840, 1058944, 1226240, 1323680, 2117888, 2452480, 2647360, 3962767, 4235776, 5294720, 7925534, 8471552, 10589440, 15851068, 19813835, 21178880, 31702136, 39627670, 42357760, 63404272, 79255340, 126808544, 158510680, 253617088, 317021360, 507234176, 634042720, 1014468352, 1268085440, 2028936704, 2536170880, 4057873408, 5072341760, 10144683520, 20289367040]

約数ペア:

[(1, 20289367040), (2, 10144683520), (4, 5072341760), (5, 4057873408), (8, 2536170880), (10, 2028936704), (16, 1268085440), (20, 1014468352), (32, 634042720), (40, 507234176), (64, 317021360), (80, 253617088), (128, 158510680), (160, 126808544), (256, 79255340), (320, 63404272), (479, 42357760), (512, 39627670), (640, 31702136), (958, 21178880), (1024, 19813835), (1280, 15851068), (1916, 10589440), (2395, 8471552), (2560, 7925534), (3832, 5294720), (4790, 4235776), (5120, 3962767), (7664, 2647360), (8273, 2452480), (9580, 2117888), (15328, 1323680), (16546, 1226240), (19160, 1058944), (30656, 661840), (33092, 613120), (38320, 529472), (41365, 490496), (61312, 330920), (66184, 306560), (76640, 264736), (82730, 245248), (122624, 165460), (132368, 153280)]